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what is the reason for the change in enthalpy between the throttle valve and the evaporator in a practical refrigeration cycle that is using R12 refrigerant.
A car accelerates uniformly rest to 81 ft/s over a distance of 700 ft along a curve of 800ft radius .Determine the magnitude of the total acceleration at the instant that speed of 81ft is reached.
If the critical resolved shear stress is 10 MPa, what is the yield strength?
Determining the Exit Temperature and Power Input of Air through a Compressor, Air at 150Pa and 310K enters a compressor of inlet diameter 2cm. The Compressor raises the pressure to 3.5 times the inlet pressure
What is the true altitude of the plane above sea level? What would be the indicated altitude after landing at an aerodrome located at sea level? (Gas const = R=288 J/KgK)
why is the carnot cycle not suitable as an ideal cycle for all the power producing devices ?
Refrigerant R-134a vapor in a piston-cylinder assembly undergoes a constant-pressure process from saturated vapor at 800 kPa to 50 ºC.
In the an ideal turbo jet, the engine is designed such that the turbine work is divided equally between the compressor and the propeller. The gas from the turbine discharges to a nozzle for additional thrust.
(a) Determine the blade angles at leading and trailing edges of both the rotor and stator at the mean radii, (b) Calculate the mass flow rate and the power required for each stage.
Derive an expression for the bounding energy Eo in terms of the equilibrium interionic separation ro and the constants D, and p using the following procedure
The formula for the coefficient of performance 'COP' for air standard refrigeration cycle when we use cold air properties is not given in the text. Derive the expression for COP as function of the compression ratio similar to how the ideal Brayton..
why are tangent points so important when sketching, drawing on paper with instruments, or using cad?
determine the actual and minimum theoretical operating costs, each in $/day.
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